By Nic Neal, HR Specialist, allpoints
When a M&A deal is announced, the focus usually floods to the deal itself – the valuation, the press release, the handshake photo. The moment the ink dries is where the real strategic work begins.
M&A is designed to build stronger, more competitive organisations, whether that’s improving the client base (for example, moving from a UK agency to a global one) or combining services to give clients a more complete offering. Yet 70% of deals fail to reach their final earn-out targets, and one of the most common reasons isn’t strategy or finance, it’s integration.
Bringing two organisations together is far more complex than combining balance sheets. It means merging cultures, aligning teams, redefining roles, rebuilding ways of working, and building a clear talent strategy for the newly combined organisation. This is where many businesses underestimate what’s required.
Integration often becomes an afterthought rather than a strategic priority, layered on top of already demanding roles and operational pressures, when in reality it should be treated as its own programme of work. The result? Integration is moving slowly, inconsistently, or not happening properly at all.
When it doesn’t, the cost is real. People become uncertain about their futures, teams pull in different directions, and clients feel the disruption before leadership does.
Why Integration Is Often Overlooked
The common misconception in M&A deals is that things will settle quickly once the deal is done. Those teams will adjust naturally. The organisation will begin operating as one as soon as they get to know each other. This assumption is precisely why integration takes far longer than anyone anticipates.
Old ways of working are often applied to a landscape that has fundamentally changed. Processes that worked well before the merger are carried forward without fully recognising that the organisation now has different structures, people, and expectations. At the same time, a quiet tug of war can emerge between company cultures and the people within them.
Meanwhile a quieter challenge emerges: culture. Two companies bring two distinct approaches to leadership, communication, and decision-making. There’s an assumption that one culture will eventually dominate the other, when all that is needed is something new built intentionally from the best of both. That rarely happens by accident.
Instead, teams end up working alongside each other rather than becoming fully integrated. They share projects and clients, but deeper alignment – around ways of working, how decisions get made, how people communicate – hasn’t been built yet.
Layer restructuring into the mix, and it becomes difficult for people to find stable ground. Reporting lines change, teams shift, and roles evolve, sometimes repeatedly. At the same time, operational pressures remain just as demanding as before. Day-to-day delivery continues at full pace, leaving very little space for people to step back and focus on the integration itself.
The Operational Reality of Integration
Integration isn’t just a people challenge, it’s an operational one. When two organisations merge, duplication is inevitable. Both have their own HR teams, finance, and operational functions. A combined organisation does not need two of everything.
This is where the integration strategy becomes critical. The goal isn’t to remove roles for the sake of cost-cutting, but to thoughtfully create a structure that is efficient, sustainable, and aligned with the future direction of the organisation. That often means consolidating duplicate teams into one core function. Sometimes it means redefining responsibilities so the strongest capabilities from both organisations are retained, not just the loudest voices or the legacy hierarchy.
When this is handled well, the result is clarity, efficiency, and teams that are genuinely stranger than either organisation had before. When it’s handled poorly, the result is confusion, uncertainty, and disruption that ripples far beyond the org chart.
Treating Integration as Its Own Strategic Workstream
The organisations that navigate the M&A deal most successfully share one common approach: they treat integration as a standalone programme of work, not an operational side task.
That means establishing dedicated ownership from day one. Ideally, a named integration lead or small task force, with real authority and accountability, is responsible for guiding the process for up to two years post-merger. Not a committee that meets occasionally. A team with a clear mandate.
That team should have representation across every critical dimension across the business:
- People and culture
- Ways of working and processes
- Internal communication
- Financial alignment
- Talent strategy and workforce planning
Integration cannot simply be added to someone’s existing workload and without dedicated ownership, it risks being overshadowed by the immediate demands of the business.
A strong integration strategy also requires a clear talent strategy – not just a list of new roles to recruit. The organisation needs to understand which capabilities are needed for the future and how teams will evolve, and what the combined structure will look like. Recruitment has a role to play, but only in the service of that long-term picture. Hiring into an unclear structure just compounds the problem. of the broader talent strategy. Hiring decisions during integration should support the long-term structure of the business rather than simply reacting to short-term gaps.
Communication, Culture and Role Clarity
Restructures are difficult, but uncertainty is often far harder for employees to navigate than the change itself. Timely, honest communication, about what’s happening, what’s still being decided and where individuals stand is one of the most powerful tools available during the integration.
Role clarity sits at the heart of this. When reporting structures shift and teams are redefined, people need to understand how their role fits into the new structure. Even when every answer isn’t immediately available, establishing direction early helps create stability.
Culture deserves the same intentional approach. In most mergers, the smaller organisation naturally begins adopting the processes and ways of working of the larger one. It’s the path of least resistance, but it isn’t always the right one. The stronger culture isn’t automatically the bigger one, and the better process isn’t always the established one.
A thoughtful integration strategy gives leadership the space to evaluate deliberately: which behaviours, ways of working, and cultural strengths should actually shape the new organisation? Because integration isn’t only about systems and structures. It’s about people, mindset, and how teams experience the change from the inside.
The Human Ripple Effect
When integration is not handled strategically, the ripple effects spread like wildfire. If teams feel uncertain about their roles or direction, people become disheartened. When individuals feel disconnected from the company’s vision or unclear about their future, they leave. Attrition during integration doesn’t just create operational gaps, it destabilises the teams clients rely on, erodes confidence and begins to unwind the very value the deal was designed to create.
This is how earn-out targets get missed. Not through bad strategy at the top, but through avoidable erosion in the middle. Key people leave. Delivery becomes inconsistent. Clients notice.
Integration strategies that focus exclusively on senior leadership structures without accounting for the mid-level teams, who are the heartbeat of the business, tend to create exactly this outcome. The people closest to the work, and closest to the client, are left without clarity, without direction, and eventually without reason to stay.
The deal was meant to build something stronger, but poor integration quietly derails it.
Integration Is the Real Test of an M&A Deal
Signing a merger or acquisition agreement is only the starting point.
The true success of the M&A deal depends on what happens next. Integration is not a short adjustment period. It’s a structured process that can take years to fully realise. When organisations treat integration as a strategic priority, supported by a clear integration programme and talent strategy, the chances of reaching the intended financial and cultural outcomes increase dramatically, because ultimately, the goal of the M&A deal isn’t simply to combine two businesses. It’s to build something stronger than either organisation could achieve on its own.